We turn to our smart phones for everything from news updates to boredom-busting games. But can they help us lose weight? See the best fitness apps that just might get you to shed those pounds fast

Nike Training Club, Free Sure, Adriana Lima and Rihanna have amazing bodies. They also have amazing personal trainers. And now we can, too. Thanks to Nike Training Club, you can get exclusive workouts from celebrities like Lea Michele, athletes like Shawn Johnson, and even from Rihanna's personal trainer, Ary Nunez.

With access to 85 custom-built workouts, these drills build on the fundamentals of strength, cardio, interval, and core training to help you tone your body like an A-lister. With the audio instructor and video demonstrations available at all hours of the day, it's like having a personal trainer at your beck and call.

Can't believe they didn't mention MyFitnessPal! Great for tracking calories, setting goals.. Also, if you have any FitBit products, their site is really good. I can't recommend the FitBit Aria scale and FitBit One tracker enough...such good products!